diff --git a/util/reserved-domains.json b/util/reserved-domains.json
index 797806d1b..0d2de4bd3 100644
--- a/util/reserved-domains.json
+++ b/util/reserved-domains.json
@@ -1,6 +1,7 @@
 [
     "_atproto",
     "_vercel",
+    "_zone-updated",
     "account",
     "accounts",
     "admin",